Suppress EmbeddedEngine.java check

EmbeddedEngine class is a copy from the Debezium project.

etc/checkstyle/checkstyle-suppressions.xml

@@ -3,6 +3,7 @@
 		"-//Puppy Crawl//DTD Suppressions 1.1//EN"
 		"https://www.puppycrawl.com/dtds/suppressions_1_1.dtd">
 <suppressions>
+	<suppress files="(.*EmbeddedEngine\.java)" checks="[a-zA-Z0-9]*"/>
 	<suppress files="(.*Class\.java)" checks="[a-zA-Z0-9]*"/>
 	<suppress files="[\\/]src[\\/]main[\\/](protos)[\\/]"
 			  checks="(Javadoc*|HideUtility*)"/>